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Cough variant asthma, or CVA for short, is a less common form of asthma that is characterized by the fact that its only symptom is a chronic cough. People who have CVA do not generally have the other common symptoms of asthma, such as wheezing, shortness of breath and chest tightness. CVA is an especially common diagnosis in young children, and it often progresses into full-blown asthma down the line.
The cough in cough variant asthma is a dry cough that lasts for more than 6 to 8 weeks. It can occur any time of the day, though coughing at night that wakes you up is common with CVA. The cough also often worsens during exercise. Other conditions, such as respiratory infections, can cause a chronic cough, but when the cough lasts longer than a few weeks in the absence of an active infection, doctors will suspect CVA.
Diagnosing cough variant asthma, however, can be difficult. Unlike with regular asthma, people with CVA usually have normal pulmonary function tests, such as ...
Q: What is Zicam and how does it work? A: Zicam is an over-the-counter product that contains zinc and is used to reduce both the duration and the severity of the common cold. According to the manufacturer, Zicam works best when used or taken within 24 to 48 hours of the onset of common cold symptoms such as runny nose, nasal congestion or coughing. Q: Is Zicam a drug? Zicam was not approved by the FDA as a drug and it was not marketed as a drug. Zicam's manufacturer, Matrixx Initiatives, Inc., marketed Zicam as a homeopathic remedy. Q: Does Zicam actually work? A: There have been some studies done that showed that zinc products such as Zicam have reduced the length of a person's cold by one day, when it did show benefit. However, there is no conclusive evidence that Zicam, or similar products, actually works. Q: Why did the FDA issue a warning about Zicam? A: The product may damage or destroy a person's sense of smell, according to the FDA. It is a condition called anosmia . Since...
Definition Information Drying agents such as calamine lotion may help relieve the itchiness caused by poison ivy or rashes . Your doctor may prescribe strong steroids for extra relief.
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